Due to the popularity and scarcity of these properties in Nashville, it would be difficult to find a property meeting the STR requirements given a proposed purchase price of ~$300-350k.Additionally, your situation is a bit unique as it sounds like you may be living away from your primary residence more often than not, and as such, I also recommend you confirm with a lender whether this situation would qualify for this type of (primary residence) loan.

Purchase price: $747,500 Cash invested: $130,000 Back in 2021 I jumped on a duplex that has 4BR/3BA on each side and is walkable to The BeltLine (an area popular with ATL's younger community).

Air Bnb and short term rental properties were very popular at the time.

Not only did Detroit beat every city in other popular Midwest states like Indiana, Missouri, Ohio, Wisconsin, etc...Detroit beat every city in the super popular states of Arizona, California, Florida, and Texas - Detroit beat them ALL!

On the inside, our popular furnishing touches include a neon light up sign and a very comfortable pull-out couch enabling two extra guests to maximize the occupancy. 

Or the always popular, “My tenant moved out and stole my washer, dryer, water heater and light fixtures!!!” 

Not only did Detroit beat every city in other popular Midwest states like Indiana, Missouri, Ohio, Wisconsin, etc...Detroit beat every city in the super popular states of Arizona, California, Florida, and Texas - Detroit beat them ALL!

KW is a very popular choice for new agents because of the company culture.

Where can I do to do some research and figure out weather this style of get away is still growing in popularity, or if it is on the decline? 

That said, I've been seeing the TIC (tenants in common) becoming a popular alternative to converting to condos. may want to look into that as well. none of this is intended to discourage you from moving forward, just some food for thought.